1. Department of Neurology, Bethune International Peace Hospital, Shijiazhuang 050000, China
2. Dynacare, Ottawa, Ontario K1L8H2, Canada
3. Department of Neurology, the Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
4. Key Laboratory of Hebei Neurology, Shijiazhuang 050000, China
5. Laboratory Medicine Center of Qilu Hospital of Shandong University (Qingdao), Qingdao 266035, China